Telegraphy.



I. KITSEE.

TELEGRAPHY.

APPLIOATYION FILED AUG. 9, 190a.

l N VENTOR PATENTED MAY 26, 1908;

"enirnnsrnrns PATENT OFFICE.

ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF O'NE-HALI TO WILLIAM J. LATTA, OF PHILADELPHIA, PENNSYLVANIA.

. TELE GRAPHY.

8pecification or Letters Patent.

Patented May 2c, 1908.

'To all whom it may concern: Be, it known that I, IsmoR KITSEE, citizen of the United States, residing at Philafdelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Im rovements in Telegraphy, of which the fol owing is a specification. My invention relates to an improvement in telegraphy and has more special reference to telegraphy wherein true reversals are employed, that is wherein an impulse of one poa-rityalways follows animpulse of opposite polarity and all the impulses are of equal strength and duration. In such system,

specially if theline is of comparatively large resistance and capacity, nstruments have to be employed very delicate in their construction. It Was-found that where the impulses are feeble and of short duration, they cannot well operate a sensitive instrument, so as to make a good contact, but they can operate the same, 'so as to break a'normally made contact; 3 In such system, it is necessary-to provide means,-so that, the'translating instrument,if the-same consists of an electro-. ma not, such as a sounder, is operated in accor ance with the characters transmitted.

1 In the drawin 1 and 2 are the line oftransmission; 3, t e receiving device inserted in said line. This receiving device is provided with the armature 4 normally resting against the'contact 5. The armature is connected through wire 6 with battery 8 and the contact 5 through wire 23 with one terminal. of the electro-magnet-IO. The battery 8- is. connected through wire .9 with the other, terminal of said electro-magnet. This electro-ma net is provided with the, armature 11 adapte to operate the escapement 12 and this escapement is in operative relation to the star-wheel 13. 15 is a source of power,

/ with non-conducting spaces. The brushes here shown as a motor, on the shaft of the are mature of which are mounted the commutator 14 and the star-wheel aforesaid. The

commutator has conducting barsalternating 16 and 17 in operative relation to the com-' mutator are connected through wires 18 and 19 and battery 20 with the translating device 22. At the transmittingstation is the transmitting device, here comprising the 1lgatteries 24 and 25 and the transmitting e 26. its long as the lever. of the key is not de pressed, the shunt around battery 24 is not greater number of cells than 25, a current will flow over the line in the direction of the unfeatllered arrow,,but when the key is depressed, the battery 24 is shunted and the battery 25 comes into'play and a current will flow over the line in the direction of the feathered arrow. If the line is of a great capacity and it is desired to limit'the flow of the current, a condenser should be placed in of current 24 and 25.

The operation of this device is as follows: It is supposed that'the line has a great capacity and that it is desired to transmit true reversals, that is, alternating impulses always ofthe same duration and intensity and that, therefore, a condenser 21 is placed in the line. Normally, therefore, no current Will pass over the line and the armature 4; will rest against its stopping point 5. When the operator desires to transmit amessage, he do resses the key, with the result that an impu se in the direction of the feathered arrow, will flow over the line. It is assumed, that normally, the brushes 16. and 17 rest on an insulating spa'ce of the commutator 14.

tr0-magnet3 will be energize the armature '4 willbe drawn-away from the stop 5, but will, as the impulse is only a momentary one, fall back again to its stop. Butduring the time that the armature has left the stop, thecircuit of the electro-mag'net 10 is broken the armature which was formerly drawn towardsthe cores, will now fall back and the ing the commutator to move a distance equal to one ofthe teeth, and as the commutator is so arranged that for each second tooth, a conducting bar is presented to the lating part, will now come to rest on the conducting part of this commutator. They will, therefore, close the circuit containin the translating device 22 and the same be actuated. As 'long as the transmitting impulse will flow over the line, but when the lever of the key is released, the shunt around the source 24 is opened and an impulse. will the line, preferablv between the two sources Through the flow of this im ulse, the elecbrushes 16 and 17, it'is obvious that thesebrushes, which formerly rested on the insuoperator holds the key depressed, no other,

flow over the line in the direction of the un feathered arrow. This impulse will again made and as the battery 24 consists of a 7 star-wheel 13;will be actuated, thereby allow translating device through the second of said again bemomentarily drawn away from 5,

, own telegraphic sounders. circuit forthis sounder is made, the armatime of this circuit coincides with the deactuate the device 3, the armature will the circuit will again be broken and as a result thereofi'the esca ement 12 and thereby the star-wheel 13 W1 1 be actuated. This will move the commutator a space sufiicient to 'move thebrushes 16 and 17 from the conducting bar and place the same in contact with the insulating part. The circuit of 22 will thereby be broken and the electromagnet therein be denergized. It is sup.-

osed that 22 represents one of the we As long as the' ture will be drawn downwards and will pro-' duce the o-called downstroke and when the circuit is oroken, the armature will be drawn upwards by its spring and will produce the so-cal-led upper stroke; and as the closing pression of the key and the opening time of this circuit with the time-unit the key is not de ressed; it is obvious that the sounder 22 w' answer to the transmission in the samemanner as the sounder answersin the tele-v graphic systems of to-day.

Having now described my invention, what I claim as new and desire to secure by Let ters Patent is: 1

1.' In a telegraphicsystem means to transmit reversals, a receiving device inserted in the line, a local translating device, and local I ized commutating device operatively related to said receiving device to make operative said translating device through one of the impulses received and malge inoperative said impulses received.

2. A telegraphic system comprising transmitting stations and receiving station, the transmitting stations embracing. means to transmit reversals, the receiving stations embracing an electro-magnetic receiver, the

armature normally in contact'with acousame and translate the same into readable 1 characters, said means comprising an electro-nia et mserted m the hne of trans1ms-' sion, a coal circuit therefor, a commutator,

electro-magnetic means to actuate said commutator, a translating device and means wherebythrough the movement of said commutator a circuit for said translating device is alternately made and broken.

4. In telegraphy, a receiving and translating devicecomprising the electro-magnetic receiver proper, a commutating de-.

vice, electro-magnetic means to operate the same, a translating device and means to close the circuit for said translating device through each alternate action of said commutating device, the actuating means in operative relation to the receiver proper.

translate transmitted impulses, the first means comprising an electro-magnet, the coil therefor connected in the line, a movable armatureand stationary. contact for said electro-magnet, both'normall in con-' tact with each other, an electric circuit therefor, a commutating device in operative relation. to said electric circuit, a translating device, an electric circuit therefor, and means to operate said circuit through said commutating device. o

In testimony whereof I 'affix my signature in presence of two witnesses.

. r Y ISIDOR KIISEE.v

' Witnesses:

' MARY O.S1\ '.rrn,

ALVAH RITTENHOUSE.

5. In telegraphy, means to receive and a 

